The sample that is being discussed in the problem can be either DNA or RNA. 
DNA and RNA are both very important molecules. Both of these hold immense value in biology since they store all the vital information required for living. The basic structures of the two are quite similar; the only difference is that DNA is double-stranded while RNA has a single strand. 
DNA and RNA molecules both contain a five-carbon sugar (ribose), a phosphate group, and a nitrogenous base. Except for cytosine, guanine, and adenine, the fourth part is the phosphate group that exists in both. RNA has Uracil while DNA has Thymine.
Since it has not been mentioned here what the fourth part might be, the sample might be a DNA or an RNA molecule. 
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The three common elements seen in a majority of carbohydrates or sugars are Carbon, Hydrogen, and Oxygen.
 
        
             
        
        
        
Filtration rate = 125 mL/minute = 0.125 L/min
Minutes in a day = 24 hours x 60 minutes per hour
Minutes in a day = 1440 
Total filtrate per day = 0.125 x 1440 = 180 L
Number of 2 L bottles to be filled = 180 / 2
= 90 bottles
This value is very large and we do not produce this much urine in a day. This means a portion of the fluid is being reabsorbed.
Absorption.
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Solubility 
Is the ability of a solid, liquid or gases chemical substance.
        
             
        
        
        
Its head water that the best anwers